Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7940628 | Multilayer optical information recording medium, optical head, and optical drive | Shigeyoshi Misawa | 2011-05-10 |
| 7881178 | Optical information recording medium, optical information recording/reproducing system, and optical information recording/reproducing apparatus | — | 2011-02-01 |